GMC Sierra Performance Air Intake - Wehrli - 4in. - Flat Black - 2011-2016. This WCFab fabricated aluminum intake and air box replaces restrictive factory components to let your LML Duramax breathe better.

Designed around a large 4-inch tube with smooth bends, this kit increases airflow to the turbo, promotes quicker throttle response, and helps reduce intake temps by drawing cold air from the inner fender. The enclosed air box houses a dry filter and removable lid for quick inspection. High-quality silicone coupler, seals, and stainless T-bolt clamps provide durability, and the hydrophobic pre-filter helps keep the MAF, turbo, and intake tract clean. No tuning is required; it’s a straightforward, bolt-on upgrade finished in Flat Black powder coat. Made in the USA.

Features

• 4" aluminum intake pipe and enclosed air box
• Draws cold air through inner fender
• Dry filter with removable lid and hydrophobic pre-filter cover
• Silicone coupler, seals, and stainless T-bolt clamps
• No tuning required; bolt-on install with basic hand tools
• Includes installation hardware; Made in USA
• Durable Flat Black powder coat finish

Ready to customize your Sierra? Call us with fitment or install questions—Austin, TX: 512-982-9393; Los Angeles, CA area: 562-981-6800. We offer professional installation and customization at both locations.

Thinking about multiple items? Contact us for shipping discounts. We install on premises at both Austin and Los Angeles locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov